Hotkey: Change handling around show/hide the InfoBars

Thanks Dima73 for the suggestions
ChannelSelection: Do not disable movemode when bouquet is changed

In addition corrigate the Activate/Disactivate move mode message in the
context menu. When we are in a list where we cannot replace entries you
select the entry instead of marking the service. Entries will only be
marked when we are in a userbouquet, alternatives overview list or the
userbouquet overview list.
listboxservice: Streamline some code - just cosmetic
added posibility use plus for serviceposition

Signed-off-by: Erik Slagter <erik@openpli.org>
finer moving PIP screen

Signed-off-by: Erik Slagter <erik@openpli.org>
ChannelSelection: Disable movemode when selecting channel

Since we do not block all options anymore when we are in movemode this is
required as when leaving the channelselection it can stay in the movemode
when selecting a service from a non userbouquet service list.
skin_display: Use plus instead of negate in VU-DUO2/ET10K display
Return option "Send DiSEqC" for simple/single LNB

Some LNBs do not switch polarization without this.

As suggested by Dima73
http://forums.openpli.org/topic/33955-satconfig-add-new-option/page-2
Merge branch 'master' of git://git.code.sf.net/p/openpli/enigma2